Personal mobile communication system with call bridging

ABSTRACT

A communications system permits a personal mobile telecommunications device user, such as a cellular telephone subscriber, to complete a connection to a calling party that has attempted to reach the subscriber using the subscriber&#39;s assigned telephone number, even when the subscriber is roaming outside of his or her home area. The system includes a messaging and bridging complex having an associated database, which receives a call placed to the subscriber. If the subscriber is out of his or her home area so that the call cannot be completed, information stored in the database is used to initiate transmission of a paging signal to the subscriber. The connection to the calling party is held in the complex for a predetermined period after the paging signal is transmitted. The mobile telephone user, upon receiving the paging signal, may initiate a call from their personal mobile telecommunications device to the messaging and bridging complex, which bridges the subscriber and the calling party together. The system can also include interactive voice response equipment for advising the calling party that the call cannot be completed and that a paging signal is being transmitted. The calling party may also be offered other options, including an opportunity to use a voice mailbox or other facility to leave a message in the event that the call cannot be completed.

CROSS REFERENCE TO RELATED APPLICATIONS

This application is a Continuation of application Ser. No. 08/606,230filed Feb. 23, 1996, now abandoned, which is a Continuation ofapplication Ser. No. 08/424,825, filed Apr. 19, 1995, now abandoned,which is a Continuation of application Ser. No. 08/138,887, filed Oct.19, 1993, now abandoned, which is a Continuation of application Ser. No.07/667,734, filed Mar. 11, 1991, now abandoned.

FIELD OF THE INVENTION

This invention relates generally to mobile telecommunications, and inparticular to a system for establishing telecommunications between acalling party and a called party having a personal mobile communicationsdevice, using a paging signal and call bridging.

BACKGROUND OF THE INVENTION

The mobile telecommunications industry has been growing at a rapid rate,owing in part to the increased mobility of its customers and in part tothe decrease in the cost of the complex electronic circuits that arefound in mobile transmitters and receiving apparatus. With theproliferation of mobile telephone equipment, and the anticipated surgeof usage that is likely to occur as a result of personal communicationsnetworks and services, it is now and will be quite common to encountermobile telephone users not only in automobiles and other vehicles butalso as pedestrians carrying portable units.

Currently, the most popular form of mobile telephone service is providedby the cellular telecommunication industry. Each cellular user typicallysubscribes to service with a carrier in a particular geographic regionserved by that carrier. Calls to the subscriber when in the home regionare easily completed, since they are routed to and through a MobileTelephone Switching Office (MTSO) that includes a database whichtranslates information extracted from the incoming call into signalinginformation necessary to alert the subscriber. When the subscriber islocated in a different region, he or she is designated a "roamer", andcall completion becomes more difficult. This is because it is not known,a priori, to which MTSO to route the call. Even if the region in whichthe roamer is located is known in advance, the MTSO serving that regionwill not normally contain the translation information necessary tocomplete the call.

To overcome the roamer problem, various systems have been devised inwhich a cellular subscriber notifies his or her MTSO that he is or willbe located in another geographic area. This allows the necessaryinformation to be transmitted from the "home" MTSO to the "host" MTSO,to provide the translation required for completion of the calls to theroamer. One approach involves a system for automatically updating adatabase containing the roamer's current location, as described in U.S.Pat. No. 4,901,340 issued to R. C. Crouse et at. on Feb. 13, 1990. Thissolution does not, however, provide for seamless and ubiquitousconnections to roamers, because it is first necessary for individualcellular providers to establish cooperative business relationships witheach other and then to implement these relationships by theinterconnection of compatible signaling systems, either directly orthrough third-party roamer management systems.

If the location of the roamer is not available in a database accessibleto the MTSO, the roamer can nevertheless be contacted by usingland-based or satellite paging. One example of a roaming system whichuses paging to reach the roamer is described in an article entitled"Satellite Paging in Cellular Communications" by G. Maile, whichappeared in the Proceedings of the International Conference on Cellularand Mobile Communications, p.205-13, published by Online Publications,Pinner, UK, in 1985. According to the author, the expectation that callscan be made and received anywhere has placed significant demands on themobile terminal paging operation, thereby motivating an alternativeapproach based on satellite transmission of the paging data.

Another article that describes the development of radiopaging in Europeand an overview of European systems that enable a "roaming" service tobe provided across national boundaries, is contained inTelecommunications, vol. 21, no. 11, p. 35-47, November 1987.

In currently available paging systems, when a cellular subscriber issignaled, he or she can receive alphanumeric messages such as thecalling party's name and/or phone number. Depending on the nature of themessage, the cellular subscriber (called party) can return the call byinitiating a new call immediately or at a later time, as appropriate.However, a real time connection (on the same call that caused generationof the paging signal) between the calling party and the cellularsubscriber is not made at that time. The called party must, instead,initiate a call back based upon information received from the page. Thiscall may reach the calling party, but the likelihood of call completionis reduced by the fact that the calling party has no indication orexpectation that a return call is imminent, and thus may not beavailable at the same location to actually receive the call. If thereturn call cannot be completed, the next best option currentlyavailable is to connect the cellular subscriber to a voice mail box, inwhich a message has been left.

SUMMARY OF THE INVENTION

In accordance with the present invention, a system is provided to enablea mobile telephone user, such as a cellular subscriber, to complete areal time connection to a calling party, that has attempted to reach thesubscriber using the subscriber's assigned telephone number, even whenthe subscriber is roaming outside of his or her home area. The systemincludes a messaging and bridging complex having an associated database,which receives a call placed to the cellular subscriber. If the callcannot be completed, for example because the subscriber is out of his orher home area, information stored in the database is used to initiatetransmission of a paging signal to the cellular subscriber (calledparty). The messaging and bridging complex is also arranged to hold theconnection to the calling party for a predetermined period after thepaging signal is transmitted. The mobile telephone user, upon receivingthe paging signal, may initiate a cellular call from their personalmobile telecommunications device, (e.g., cellular telephone) to themessaging and bridging complex, which is arranged to bridge the callingparty and the mobile telephone user together. If desired, the system canalso include interactive voice response equipment for advising thecalling party that the call cannot be completed and that a paging signalis being transmitted. The calling party may also be offered otheroptions, including an opportunity to use a voice mailbox or otherfacility to leave a message in the event that the call cannot becompleted.

BRIEF DESCRIPTION OF THE DRAWINGS

The present invention will be better appreciated by consideration of thefollowing Detailed Description, which should be read in light of theaccompanying drawing in which:

FIG. 1 is an overall block diagram of one arrangement of a system forusing a paging signal and call bridging for establishingtelecommunication between a calling party and a mobile telephone usersuch as a cellular subscriber;

FIG. 2 illustrates one possible arrangement of a memory table entry foreach subscriber desiring to use the system in accordance with thepresent invention, which entry is contained in database 106 of FIG. 1;

FIG. 3 illustrates in flow diagram format, the steps followed using theapparatus of FIG. 1 in order to initiate transmission of a paging signalto a mobile telephone user such as a cellular subscriber when thesubscriber is roaming in a foreign service area;

FIG. 4 illustrates in flow diagram format, the steps followed using theapparatus of FIG. 1 in order to complete the bridging connection betweenthe cellular subscriber receiving the paging signal transmitted usingthe process illustrated in FIG. 3 and the calling party; and

FIG. 5 illustrates in block diagram form, the messaging and bridgingcomplex 110 of FIG. 1.

DETAILED DESCRIPTION

FIG. 1 illustrates one embodiment of a system arranged in accordancewith our invention, by which a calling party at station 101 may contacta called party (sometimes hereafter referred to as a subscriber) havinga personal mobile telecommunications device such as a cellular phone 102which can be in an automobile or which is otherwise portable. In thissystem, a call is initiated when the calling party dials a telephonenumber uniquely indicative of the called party. For example, the numbercan be 1-800 followed by a seven digit number of the form NXX-XXXX,where N is a digit from 2 to 9 and X is any digit. This number issometimes referred to as a Person Locator Number (PLN). Alternatively,the call may be initiated through dialing of a special access code(SAC), which uniquely identifies the provider of the servicecontemplated by our invention, or by dialing another number associatedwith the service provided by our invention.

The call is extended, in conventional fashion, through a local office103 to a toll switch 104, via an equal access facility such as a FeatureGroup D trunk 105. An indication of the telephone number associated withstation 101 is extended to toll switch 104 by use of the AutomaticNumber Identification (ANI) feature presently available when FeatureGroup D trunks are used to provide access. Toll switch 104, which may bean AT&T 4ESS electronic switching system of the type described in BellSystem Technical Journal, Vol. 56, No. 7, pp. 1015-1320, publishedSeptember 1977, is arranged to recognize the PLN, and in responsethereto, to query an associated database 109 to determine how to routecall. This query may be communicated to database 109 via a link 131 in acommon channel signaling (CCS) system. Database 109 may be a generalpurpose data processor such as an AT&T 3B-20 processor configured asdescribed in U.S. Pat. No. 4,191,860 issued to R. Weber on March 4,1980, or another database machine arranged to provide similarfunctionality. Database 109 contains a series of routing translationtables which provide a mapping of the subscriber's PLN to an addresswhich uniquely identifies a person locator memory table stored within aparticular messaging and bridging complex. Upon receipt of the address,switch 104 routes the call, together with ANI information (ifavailable), to the appropriate messaging and bridging complex, in thiscase to complex 110 via toll switch 128. Advantageously, messaging andbridging complex 110 can be implemented in CONVERSANT® Voice InformationSystem Release R1V2.1 available from AT&T.

Messaging and bridging complex 110, upon receipt of a call, is arrangedto query an associated database 106, which also may be a general purposedata processor such as an AT&T 3B-20 processor. This database containsinformation described in more detail below in connection with FIG. 2,which includes an In-Transit Flag (ITF), which indicates the roamingstatus of the subscriber.

The status of this flag (and other information in the database record)can be controlled manually as described in U.S. Pat. No. 4,313,035issued to Jordan et al. on Jan. 26, 1982, or automatically as describedin the patent application Ser. No. 07/607925 filed on behalf of Bisselland Campano on Nov. 1, 1990, which is assigned to the same assignee asthe present application. For the purposes of this part of thedescription, it is sufficient to recognize that database 106 canindicate to complex 110 that the called party is not reachable by anordinary cellular call, and that the paging and bridging functionalityprovided by the present invention is necessary to effect real timecommunication between the calling and called parties. Complex 110 can inthe same query concurrently retrieve a paging number associated with thesubscriber, which is used as described below. It is to be noted herethat the query to database 106 and the status response to complex 110can be communicated via a data link 108, which could be external ifthose units are not integrated.

If the ITF is enabled, messaging and bridging complex 110 is arranged toplay an announcement to the calling party, for example stating that "Theparty you are calling is not available at this time. If you care tohold, please press `1` now, and we will attempt to page and connect youwith your party." Optionally, messaging and bridging complex 110 can bearranged to add a further announcement, to the effect that "If at anytime you would like to terminate this call and leave a message, pleasepress `2`." Messaging and bridging complex 110 is easily programmed todetect the entry of dialed digits (touch tones) and to respond byconnecting the calling party to means for electronically storingmessages. For the limited number of instances in which the calling partydoes not enter touch tones, the call can be forwarded to an operator,or, as a default, also be connected to an electronic message storagesystem.

If the calling party enters a "1", messaging and bridging complex 110initiates a call to a paging node 112, transmitting to the node both thesubscriber's paging number obtained from database 106, as well as theANI information identifying the calling party telephone number, if suchANI information is available. Paging node 112 can be a satellite pagingfacility of the type operated by numerous paging service providers suchas SKYTEL(TM), that are equipped to transmit a paging signal toreceivers located anywhere within a desired geographic area.

When the paging signal is received at the paging receiver device 114carried by the subscriber, information identifying the calling party'stelephone number and/or a preselected telephone number reserved forcompletion of bridging of cellular calls in messaging and bridgingcomplex 110 may be available, if device 114 is of the type that canreceive and display alphanumeric information. However, the callingparty's number is primarily intended to be used for call screeningrather than for the purpose of call-back. If device 114 is morerudimentary, the paging signal may simply indicate to the subscriberthat a call has been made using the system of the present invention. Ineither event, immediate communication with the calling party will bepossible by the initiation of a return call to a preselected telephonenumber associated with complex 110. This number would, of course, beprovided to the subscriber in advance, if a rudimentary paging device isused. It is to be noted here that paging receiver device 114 andcellular phone 102 can be integrated into a single physical unit, suchas the PAGERPHONE(TM) currently offered by Universal Cellular.

After the subscriber initiates a call from a personal mobiletelecommunications device such as cellular phone 102 to complex 110, thecall is typically routed, in conventional fashion, to a mobile telephoneswitching office (MTSO) 120 via a radio link 122. From this point, thecall is routed normally, usually through a switch 124 in a localswitching office and one or more toll switches such as toll switches 126and 128. Toll switch 126 may access database 109 using CCS link 132, inorder to obtain network routing information. As stated previously,complex 110 may be a CONVERSANT Voice Information System arranged toissue voice prompt scripts in response to calls received at particularnumbers. In this case, upon receipt of a call placed to the preselectedtelephone number, messaging and bridging complex 110 may play anannouncement requesting the subscriber to enter a personalidentification number (PIN). When the correct PIN is entered andverified, the call made by the subscriber is bridged in complex 110 tothe original call, and real time communication is enabled.

FIG. 2 illustrates one possible arrangement of a memory table entry orrecord contained in database 106 of FIG. 1 for each subscriber desiringto use the system in accordance with the present invention. This entryor record is essentially the same as the record illustrated in FIG. 5 ofthe above referenced Jordan patent, but contains an entry in field 201,indicating the paging number associated with each subscriber. Note thatrecord contains an in-transit flag (ITF) 203, which can be set to apredetermined value to indicate that the subscriber wishes to invokecall treatment as contemplated by our invention. This is particularlyuseful when the subscriber is roaming outside of his or her home area.

When database 106 is accessed by complex 110, the appropriate record isretrieved by a lookup operation performed using the complex routingaddress as a key. If the ITF is set, indicating that the subscriber isroaming, the corresponding paging number contained in field 201 isreturned to messaging and bridging complex 110. This paging number canbe a telephone number or an identification number that uniquelyidentifies the subscriber's paging receiver. If the ITF is not set, thecall can be completed to the regular cellular number for the subscriber,as contained in the call complete field 202, or to another destinationspecified by the person locator number (PLN) described in theabove-cited Jordan patent.

FIG. 3 illustrates in flow diagram format, the steps followed using theapparatus of FIG. 1 in order to complete a call placed to a mobiletelephone user such as, for example, a cellular subscriber when thesubscriber is roaming in a foreign service area. The process of FIG. 3begins in step 301, which is initiated when the calling party places acall to the subscriber and the call is routed to messaging and bridgingcomplex 110 via toll switches 104 and 128. The call has been routed tocomplex 110 using an address which uniquely identifies a particularperson locator memory table or record stored within the complex. In step302, a query is initiated by complex 110 to database 106, so that theappropriate database memory table or record can be retrieved. Database106 translates the complex address to an address at which the associatedrecord, having the format illustrated in FIG. 2, is stored. This recordis examined in step 304, to determine if the ITF is set, indicating thatthe telephone subscriber is roaming in a foreign service area. If anegative result is obtained in step 304, a conventional destinationnumber (ie, the cellular number assigned to the subscriber in his or herhome area) is retrieved, and the call is completed in step 306 as aconventional cellular call. On the other hand, if a positive result isobtained in step 304, an announcement generated in messaging andbridging complex 110 is returned to the calling party in step 307, andthe digits entered by the calling party are collected by messaging andbridging complex 110 in step 308. The announcement/digit collectionfunctions are conventional in CONVERSANT equipment.

It is to be noted here that the announcement played to the calling partyin step 307 can be the simple 2-choice query described above, or a morecomplete menu of options, some leading to conventional call treatmentand others allowing the real time bridging contemplated by ourinvention. For example, the calling party may have the choice of: (1)leaving a voice message; or (2) leaving a voice message, but paging thesubscriber to alert him/her that a priority message is waiting; or (3)paging the subscriber and leaving a number for a call-back at a latertime.

Step 309, also performed by messaging and bridging complex 110, examinesthe collected digits to determine if the calling party desires to holdthe call, such that the subscriber can be paged and subsequentlyconnected. If the calling party does not wish to hold, a message can bestored in messaging and bridging complex 110 in step 310, whereupon thecall is terminated.

In situations in which the calling party desires to hold for animmediate connection to the called subscriber, a positive response isdetected in step 309 and the call is "held" in step 311. This function,performed in messaging and bridging complex 110, is accomplished byconnecting the original call to one input or leg of a bridge. When thecalled party is connected to a second bridge input or leg, the call pathis completed, and two way communication is possible.

If the calling party enters a positive response in step 309, an optionalstep 320 can next be performed, in which complex 110 plays a messagerequesting the calling party to provide a brief indication of his or heridentity and the purpose of the call. This information is stored withincomplex 110, so that, at the time the subscriber calls back, the briefmessage can be retrieved and played back. This is done so as to give thesubscriber additional call treatment options. For example, if thesubscriber does not wish to be bridged to the calling party at thattime, he or she can signal complex 110 to prompt the calling party toleave a message. This is discussed in more detail in connection withstep 407 in FIG. 4.

When the calling party has been placed on hold in step 311, thesubscriber is signaled by paging node 112 of FIG. 1, in step 312.Advantageously, this paging, as stated previously, can be accomplishedby satellite, so that a wide geographic area can be reached.Alternatively, land based paging can be used, as long as the pagingsignal is capable of being received in the geographic area in which thecalled party is likely to be located. Steps 313 and 314 are nextinitiated in sequence, during the interval between the page and thereceipt of a response from the called subscriber, in order to assurethat the calling party wishes to continue to hold. Specifically, anannouncement generated in messaging and bridging complex 110 may be madeto the calling party in step 313, inquiring whether the caller wishes tocontinue to hold. If a positive response is detected, and bridging hasnot yet been effected by messaging and bridging complex 110, step 313may be repeated after a desired time interval has elapsed, as long asstep 317 indicates that a predetermined timeout interval has notelapsed. If a negative response is detected in step 313, or if theelapsed time exceeds the predetermined time out interval in step 317, amessage may be left in step 316 in the same manner as provided in step310.

FIG. 4 illustrates in flow diagram format, the steps followed using theapparatus of FIG. 1 in order to complete the bridging connection betweenthe subscriber receiving the paging signal transmitted using the processillustrated in FIG. 3, and the calling party. The process of FIG. 4begins in step 401, after the subscriber initiates a call from his/hermobile telecommunications device (such as cellular telephone 102) thatis received in MTSO 120, and routed to messaging and bridging complex110 via local office 124 as well as toll switches 126 and 128 and anyother intermediate switches located in the public switchedtelecommunications network (PSTN). When the call reaches complex 110 anannouncement is played to the subscriber instep 402 requesting thesubscriber to enter his/her PIN, and the digits are then collected instep 404. Next, a query is directed to database 106 in step 403, inorder to access the appropriate subscriber record. Thus differentiationbetween individuals subscribers; can be accomplished by providing eachsubscriber with a unique access number for dialing into complex 110, orby using a common access number and thereafter requesting thesubscriber, in step 402 to enter a unique PIN assigned to thatsubscriber.

If the PIN entered by the subscriber is not valid, as determined in step405, step 404 may be repeated for a predetermined number of times beforean announcement terminating the call is played in step 406. On the otherhand, if the PIN is valid, a check is made to determine if the callingparty is still on hold. If a positive response is received, and ifoptional step 320 was invoked in the process of FIG. 3, the briefmessage stored by the calling party can be retrieved and played to thesubscriber at this time. The subscriber can then decide to proceed instep 315 to be bridged to the call, or can choose other call treatmentoptions, through input of touch tone signals to complex 110. Theseoptions can include connecting the calling party to the subscriber'svoice mailbox, or playing one of several prerecorded messages suitablefor playback to the calling party. Alternatively, step 407 may beskipped, and the subscriber bridged to the calling party in step 315.

If it is determined in step 408 that the calling party has terminatedthe call (for example, in step 313 of FIG. 3), the process of FIG. 4proceeds to step 409, in which the subscriber is allowed to access andretrieve messages stored in complex 110 in his or her voice mailbox.

FIG. 5 is a block diagram showing the interrelationship between themajor elements in messaging and bridging complex 110 shown in FIG. 1.This diagram is essentially the same as the arrangement illustrated inFIG. 2 of U.S. Pat. No. 4,896,346, issued to W. R. Belfield et al. onJan. 23, 1990, entitled "Password Controlled Switching System". Asstated previously, the CONVERSANT Voice Information System ReleaseR1V2.1 is a system having the functionality described in FIG. 5. It isto be noted however, that any system that can store announcements,typically in synthesized electronic form, play the announcements inresponse to the receipt of collected digits, perform voice mailboxfunctions, including the storage of messages left by a calling party, sothat they can be retrieved by the called party at a later time, and tobridge together calls connected to first and second bridgingconnections, may be used.

In FIG. 5, calls received in complex 110 via toll switch 128 areconnected to one of a series of trunk interfaces 502,503, which routesignaling information associated with the call (such as called numberand ANI, if available) to a programmed processor 510 via data bus 512,and the call itself to a switching unit 507. In the case of an incomingcall directed to a subscriber, programmed processor 510 queries (step302 in FIG. 2) the person locator memory table or record (FIG. 2)contained in database 106 to determine the value of the ITF associatedwith the called party. If the ITF is enabled, processor 510 transmitsvoice prompt digital data stored in database 106 via bus 512 to one ofthe voice response units 504,505, so that the message described in step307 of FIG. 3 can be played to the calling party.

Complex 110 is equipped with a digit receiver 509 and a word recognizer506 arranged to detect and recognize the calling party's response. Theresponse is routed to these units via switching unit 507, under thecontrol of processor 510. Upon receipt of a positive response from thecalling party, the call is connected to one input or leg of a bridge515, again via switching unit 507 under the control of processor 510,and a command is transmitted to paging node 112 over data link 514, togenerate a paging signal to the subscriber. The information needed tosignal paging node 112 is obtained from the memory table in database 106as well as from ANI information, if available, which was previouslyprovided to processor 510. Optionally, if the calling party is requestedto leave a brief message (step 320 in FIG. 3), an announcement to thateffect, stored in database 106, is played in the same manner as theannouncement described above. The message returned by the calling partyis routed to voice coder 508, converted to digital form, and stored indatabase 106, all under the control of processor 510. Administrativeterminal 511, which may be a computer terminal or personal computer, isprovided in complex 110 for operations, administration, maintenance andoverall management.

When the subscriber initiates a call-back, the routing described aboveoccurs with respect to signaling information (forwarded to processor510) and the call itself (forwarded to switching unit 507). In thisinstance, the message played to the subscriber (step 402 in FIG. 4) isdifferent, and is retrieved from a different storage area in database106 based upon the telephone number dialed by the subscriber. The PINentered by the subscriber is detected and recognized by digit receiver509 or word recognizer 506, and checked against stored information indatabase 106. If the PIN is determined to be valid, the incoming call isconnected through switching unit 507 to the second input or leg ofbridge 515, thereby connecting the subscriber to the calling party.Optionally, the subscriber can retrieve (step 407 in FIG. 4) the briefmessage stored in database 106. This is accomplished by routing thestored message via bus 512 to one of the voice response units 504,505.As pointed out in the above-cited Belfield patent, numerous changes mayeasily be made in the messaging and bridging complex 110 of FIG. 5.

Persons of ordinary skill in the art will appreciate that many changesand adaptations of the present invention may be made without departingfrom the spirit of the invention, which is limited only by the appendedclaims. For example, while FIG. 1 depicts separate databases 106 and 109supporting complex 110 and toll switches 104 and 126 respectively, itwill be understood by those of ordinary skill in the art that a singledatabase can perform the same functions and be accessed from multiplepoints. In addition, the functions performed by complex 110 can beincorporated into toll switches 104, 126 or 128, or into local switch103, or indeed into the switching fabric of any network, such as aprivate, cellular or local exchange network. Database 106 of FIG. 1 isshown as being internal to complex 110. However, it will be readilyappreciated that in some commercial implementations, the database may bean adjunct that is external to the complex itself.

Certain other modifications can also be made to our invention. Thus,voice inputs and voice recognition systems can replace touch tonedialing and touch tone receivers such as would be normally used inconjunction with complex 110. Also, even though it was stated previouslythat a PLN is used to uniquely identify a single subscriber, it is knownthat groups of subscribers (for example, sales people on a singleproject) can share a particular PLN and, when required, individualssharing the same PLN can be uniquely distinguished from each otherthrough additional predetermined inputs (such as a PIN) requested fromthe subscriber.

The invention claimed is:
 1. A system for completing calls directed to acalled party equipped with a personal mobile telecommunications devicecapable of originating and receiving telephone calls, saidtelecommunications device having an associated home geographic region,said system comprisinga bridge having first and second inputs forestablishing a real time two-way call connection between two separatecalls received at said first and second inputs; a switch for receiving acall from a calling party to a called party; means responsive to a querygenerated by said switch in response to said call for determining ifsaid called party is roaming outside of said home geographic region;means responsive to an output from said determining means indicatingthat said called party is roaming, for announcing to said calling partyplacing said call to said called party that said called party is notpresently able to receive said call and for receiving a signal generatedby said calling party in response to said announcement indicating thatthe calling party is willing to wait; means responsive to said signalfor causing said switch to connect said call from said calling party tosaid first bridge input; means for paging said called party; and meansfor connecting a second call originated by said called party from saidpersonal mobile telecommunications device to said second bridge input,so that a real-time two-way call connection is established between saidcalling party and said called party.
 2. The invention defined in claim 1wherein said personal mobile telecommunications device is a cellulartelephone.
 3. The invention defined in claim 1 wherein said paging meansincludes satellite transmission means for transmitting a paging signalover a wide geographic area.